According to local reports, the four men were aged between 34 and 50 and had a portable generator with them.
In comments to ERT, the mayor of Loutraki, Giorgos Gionis, said that the four men die in a quest for hidden loot.
Οι άνδρες ηλικίας 34 έως 50 ετών είχαν μπει στο σπήλαιο στην περιοχή Άνω Καρμπουνάρι Λουτρακίου, το βράδυ της Παρασκευής. Source: Kathimerini